296 PERCY SLADEN TRUST EXPEDITION 



that C. sechellensis would remain as a species of which only the $ is known. I have had 

 for examination a much larger material, consisting of a number of $ and ? obtained in 

 1908 — 9, in addition to those obtained in 1905. An examination of this series has 

 convinced me that it is impossible to separate C. sechellensis from C. hicornutus $. 

 According to Bolivar's description given above, C. hicormitus $ differs from C sechellensis 

 only in having two spines on the head between the eyes, shorter lobes on the anal segment, 

 the subanal lamina transversely carinate, and in having no tooth at the base of the tibiae. 

 But in the series of $ before me, the spines between the eyes vary much in length and in 

 some cases are very little developed ; the length of the lobes and the form of the subanal 

 lamina also vary from one individual to anothei*. These small characters vary inde- 

 pendently of one another. As to the little tooth said to be present at the base of the 

 tibia in C. sechellensis, I have been unable to see it in any specimen. I consider that the 

 differences are only of the nature of individual variation, and quite insufficient to 

 separate the series into two species ; I therefore retain all the specimens under the name 

 C. sechellensis Bolivar. (C Ferriere.) 



Loc. Seychelles. Silhouette : high damp forest near Mont Pot-a-eau, about 

 2000 ft., VIII. 1908, 1 $ ; near Mare aux Cochons, IX. 1908, 4 $ and 3 ? (including a $ 

 and a $ taken in coitu at night on a wild pineapple-plant). Mah^ : 1 ^, 1 $, and 1 

 immature $, 1905 (Gardiner) ; near Morne Blanc, Cascade Estate, and other localities, 

 1908—9, 2 adult $ and 6 immature $. Praslin : XI— XII. 1908, 1 very large $, and 1 ? ; 

 1905, 1 ? (Gardiner). Felicite : 14—18. XII. 1908, 2 ^, 2 ?. 



4. Carausius gardineri, sp. nov. 



Caput muticum, subelongatum, retrorsum subangustatum, antice vix pone antennas 

 transverse impressum ; postice binodosum. Pronotum Iseve, sulcatum. Mesonotum et 

 metanotum tectiformia, in $ gracilia, marginibus parallelis, in ? antice subangustata, in 

 $ tantum granulosa, marginibus baud dentatis sed granulis callosis, parvis, prsecipue in 

 metanoto distinctis. Femora omnia inermia, subtus prope apicem nee lobata nee den- 

 tata ; femora intermedia metanoto cum segmento mediano distincte $ vel vix $ longiora. 

 Abdomen granulosum. Segmentum anale $ coinpresso-tectiforme, postice profunde fissum, 

 lobis elongatis, intus denticulis nigris munitis. Segmentum anale ? late triangulariter 

 emarginatum, lobis obtusis. Lamina supraanalis parva, subtrigono-rotundata. Seg- 

 mentum abdominale ventrale septimum ? apice medio callosum et angulariter productum, 

 fuscum. 



Long, corp J 52 $ 64 



meson 13 17 



metan. c. segm. m. ... 9,8 11,5 



segm. m 1,5 2 



fem. ant 14,5 16 



„ interm 11 11,5 



„ post 13 14 



This new species of Carausius from the Seychelles must be placed near the other 

 species which are found in the same islands, on account of the form of the upper side of 



