ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 255 



the pupa? the primitive papillae coalesce ; a second pair is formed — the 

 penis papillae ; the cardo appears ; a shallow penis pouch arises. In the 

 metamorphosis into the imago, there are changes of form and structure, 

 and the chitin is deposited. The copulatory apparatus is connected with 

 the accessory part of the genital apparatus by two diverticula from the 

 ejaculatory duct. Thus it appears that in Coleoptera, as Zander has 

 shown for Hymenoptera, Lepidoptera, and Trichoptera, the development 

 of a pair of primitive papilla? at the foot of a genital-sac associated with 

 the post-segmental margin of the twelfth abdominal sternite is the 

 starting-point of the whole copulatory apparatus. 



New Genus of Mallophaga.* — J. H. Paine describes Somaphantus 

 lusius g. etsp. n. from the guinea-fowl {Numida ptilorhynclta) in British 

 East Africa. It is a miuute inconspicuous form, structurally near 

 Menopon, but having an elongated body, and the sides of the head nearly 

 straight. In general appearance it is unlike any other Mallophagan. 



Remarkable Caterpillar. f — F. Le Cerf describes a very remarkable 

 onisciform, or Chiton-like Lycamid caterpillar, which appears to be 

 reared by ants of the genus Cremastogaster, inside galls made on acacia 

 trees on the Kikuyu escarpment. It is the first instance of a Rhopalo- 

 ceran caterpillar from within a gall. The thick, livid grey, spotted 

 skin is covered with remarkably specialized seta?. The mouth-part 

 suggests a vegetarian diet, and the caterpillar, which is much too large 

 to enter the doorway of the gall, probably feeds on the acacia leaves 

 which the ants store. It must be reared in its prison. 



Peculiar Psychodid Larva. if — I). Keilin calls attention to the fact 

 that Trichomyia urtica Curtis is xylophagous, thus differing extra- 

 ordinarily in habit from all other Psychodid larva? as yet known, which 

 live in a fluid medium. Some live in decomposing fluids, others in 

 streams. All show a posterior respiratory siphon, except this aberrant 

 form, which was found making galleries in old felled trees and eating 

 the wood. 



Structure of Psychoda albipennis.§ — Albert Koch gives an ana- 

 tomical account of this minute Dipterous insect, with special reference to 

 the alimentary, vascular, and reproductive systems, and enters into con- 

 siderable detail in reference to the minute structure. He alludes at the 

 outset to the curious development of the scutum and post-scutellum of 

 the mesonetum, as described by Dell in P. sexpunctata. The scutum 

 extends forwards above the head, the scutellum underlies the metathorax 

 and the dorsal part of the first and second abdominal segments. Some 

 particles of food were found in the gut, but these may be remains of the 

 larva's meals, and the question whether the adult feeds or not, remains 

 unsettled. 



* Smithsonian Misc. Coll., lxi. (1914) No. 23, pp. 1-4 (1 fig.). 



t Comptes Rendus, clviii. (1914) pp. 1127-9. 



\ C.R. Soc. Biol. Paris, lxxvi. (1914) pp. 434-7 (2 figs.). 



§ Jen. Zeitschr. Naturw., li. (1914) pp. 163-212 (27 figs.). 



