File:Gobbidae cephalic pores - Image from page 239 of "Annali del Museo civico di storia naturale Giacomo Doria" (1916).jpg

English: Title: Annali del Museo civico di storia naturale Giacomo Doria

Identifier: annalidelmu7677196669muse Year: 1916 (1910s) Authors: Museo civico di storia naturale Giacomo Doria (Genoa, Italy) Subjects: Natural history Publisher: Genova : Stab. tipo-litografico P. Pellas Fu L. Contributing Library: Smithsonian Libraries Digitizing Sponsor: Biodiversity Heritage Library

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Text Appearing After Image: Fig. 1 - Arrangement of sensory papillae and canal-pores on head of (A) Gobius assoi (after De Buen, 1936), and (B) Cabotichthys schmidti (after De Buen, 1930). of an earlier suggestion (Miller, 1963) that the latter goby is in fact nothing more than a species of Gobius. The considerable resemblances between the two taxa include diagnostic features of special importance in the systematics of the last named genus. As well as possessing the same radial formulae (D1; VI; D2 1/14; A, 1/13; P, 20) and virtually identical scale counts in lateral series (C. schmidti, 50; G. assoi, 51-52), the two species have in common, among the pattern of sensory papillae on the head (fig. 1), a continuous horizontal segment in row d, upper origins of suborbital rows 2 and 3 close to border of orbit, anterior extension of longitudinal row b towards row 4, and extension of oculo scapular row x1 to cephalic lateral line pore p. They also agree in the squamation of the nape and breast, partial separation of the pelvic fins, the relatively large eyes, and other body proportions. Important dif- ferences between the descriptions of C. schmidti and G. assoi comprise the separation in dorsal midline of occipital rows o in C. schmidti (these being united in the other species), the occurrence of scales on the opercle in G. assoi and their absence in C. schmidti, and the condition of the anterior pelvic membrane, which was stated to be very delicate in G. assoi and entirely lacking in C. schmidti. The Adriatic specimen, iden- tified by the present author as G. assoi, resembles closely De Buen's description of this species, except that rows o are almost but not quite confluent (see fig. 2) and that no scales are discernable on the opercle.

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