File:TransEntSocLond1plate12.jpg

English: Thysanurae Hibernicae or descriptions of such species of spring-tailed insects (Podura and Lepisma Linn. ) as have been observed in Ireland. Trans. Ent. Soc. Lond. 1836 1: 89-98, pl. 12

Mr. R. Templeton's Descriptions of the Irish Species of Thysanura.

PODURA

Sp. 4. Podura albo-cincta. Plate XII. Fig. 1. Fig. 1. Insect magnified. 1 a. Antenna of left side.

Sp. 5. Podura cingula Plate XII. Fig. 2.

Fig. 2. Insect magnified. 2 a. Antennae, the 1st joint extremely large. 2 b. The profile of the fork. 2 c. A leg. 2 d. Tarsus and claws.

Sp. 6. Podura fuliginosa (grisea, Deg. ?). Plate XII. Fig. 3. Fig. 1. (sic ) Animal magnified.

Sp. 7. Podura stagnorum.

Plate XII. Fig. 4.

Fig. 4. Animal magnified. 4a. The antennae. 4b. Leg. 4c. The 1st and 2nd abdominal rings beneath, to show the position occupied by a singular erectile body, which is seen in profile when fully distended at fig. id. The animal has the capability of jutting this out at pleasure; and in some species its head is swollen beyond the dimensions of the peduncle, and stands up between the extremities of the fork, so as to lead me at first to suppose that it was useful in the springing of the little animal, but I now believe it to be the external sexual organ; when retracting, the head is first drawn in, then each portion successively, leaving ultimately a little depression in the ring.

ACHORUTES, n. g.

Antenna 4-jointed, shorter than the head ; fork obsolete. Sp. 1. Achorutes dubius Plate XII. Fig. 5. Fig. 5. Animal magnified. 5 a. Antenna. 5 b. Under surface of the abdomen, showing the obsolete fork and the erectile process.

Sp. 2. Achorutes muscorum Plate XII. Fig. 6.

Fig. 6. Animal magnified. 6a. The antennae. 6b. A foot.

SMYNTHURUS , Latr.

Sp. 1. Smynthurus viridis, Fabr. Plate XII. Fig. 7.

Fig. 7. Animal magnified. la. The mouth.

Sp. 3. Smynthurus signata, Fabr. Plate XII. Fig. 8.

Fig. 8. Animal magnified. 8 a. Profile. 8 b. Left antenna. 8c. 1st and 2nd joints of the same antenna. 8d Last 2 joints (3rd and 4th) of the right antenna, showing the hairs arising in circles, and giving it the appearance of being numerously jointed, which it is not. 8e. The

tails.