1877.] J. Wood-Mason — New Insects from Tenasserim. 161 



1. Phibalosoma acai^"thoptjs, Burm. 



Bacteria aeanthopus, Burmeister, Handb. d. Entom., 1838, Band II, Abth. 2, S. 565, $ . 

 Fhibalosoma acantliopus, Westwood, Monograph of PliasmidaB, 1859, p. 74, ^ ? . 



A specimen oH this species from Tenasserim has a lamellar process (not a 

 spine, as in the type,) bilobed at the extremity, at the hinder end of the 

 sixth ventral segment of the abdomen. It is a gigantic insect, measuring : 



Total length 10 in. 1 line ; head 6 lines ; prothorax 3*75 ; mesothorax 

 25'5 ; metathorax 19 ; abdomen 4 in. 6*5 lines + 12*5 lines = 5 in. 7 lines ; 

 antennae 2 in. 3 lines ; anterior femur 2 in. 8 lines, tibia 3 in. 1 line ; inter- 

 mediate femur 1 in. 11*75 lines, tibia 2 in. 0*75 lines ; posterior femur 2 in. 

 4i*5 lines, tibia 2 in. 5 lines. 



Hab. From Moolai to Moolat, Upper Tenasserim, 4000—6000 feet ? 

 Singapore, ? (Burmeister) ; and Java $ ? (De Haan). 



2. Phibalosoma an^namallatanum, n. sp. 



?. Very closely allied to the preceding, from which it differs in its 

 stouter body, in its shorter and thicker legs, and in the relative proportions 

 of the different parts of the body, particularly the meso- and metathorax. - 



The following are the measurements of a spirit-specimen : — 



Total length 8 in.,9 lines ; head 7 lines ; mesothorax 19 ; metathorax 

 16 ; abdomen 3 in. 6*75 lines + 1 in. 2*5 lines = 4 in. 9"25 lines ; 

 antennae 2 in. ; fore femur 2 in. 2 lines, tibia 2 in. 6 lines ; intermediate 

 femur 1 in. 8 lines, tibia 1 in. 8 lines \ posterior femur 1 in. 11 lines, tibia 

 2 in. 1 line. 



Hab. Annamallay forests. Southern India, a single specimen pre- 

 served in spirits, obtained by Colonel R. C. Beddome ; Travancore Hills, a 

 much mutilated dried example, presented to me by Mr. F. Day. 



3. Phibalosoma yiegea, Westwood. 

 Hab. Sibsagar, Assam, etc. 



* * Female with minute scale-Klce rudiments of organs of flight and the metanotum pro- 

 per equal to the medial segment. Hinder extremity of sixth ventral segment of the abdomen 

 unarmed. 



4. Phibalosoma Westwoodii, W.-M. 

 F. Westwoodii, Wood-Mason, J. A. S. B., 1875, Vol. XLIV, p. 216, ? . 

 Hab. Samagiiting, Naga Hills, and Nazirah, Assam. 



5. Phibalosoma Cantoei, Westwood. 

 P. Cantori, Westwood, Monograph of Phasmidse, p. pi. XXXVII, %. 1, ^, 

 XXXVIII, fig. 1, $. 



Hab. Malacca (Dr. T. Cantor). 



Ohs. — The specimen figured by Westwood as the male of P. Caniori 

 ''■ may turn out to be that of the preceding species, the head being similarly 



