12> 



80 Memoirs of the Indian Museum. [Vol. VII, 



(The mandibles angulate on the outer side close to the base or 

 not at all ; at most a weak groove extending from this angle 

 to the upper margin . . . . . . . . Gonatas, p. 108. 



The mandibles angulate on the outer side about opposite the 

 anterior lower tooth ; a strong groove extending from this 

 angle to the dorsal margin .. .. .. .. .. 13. 



The inner tubercles situated behind the anterior margin of the 

 head ; the outer tubercles asymmetrical . . . . Pseudejnsphenus. p. 111. 



1 3 { The inner tubercles situated on the anterior margin of the head, 

 giving the insect a Lejrtaulax-like appearance ; the outer 

 tubercles symmetrical . . . . . . . . Tarquinius, p. 111. 



Genus MACROLINUS, Kaup, 1 868a, p. 18. 

 Type, Passalus latifennis, Percheron, 184 1, pp. 8-9, pi. lxxiii, fig. 3. 



Macrolinus andamanensis (Stoliczka). 



Basilianus andamanensis, Stoliczka, 1873, pp. 160-161. 



Macrolinus andamanensis, Gravely 1914c, p. 242. pi. xiii, figs. 41-41«. 

 Ten specimens from the Andamans, where Mr. Kemp recently collected two at Port Blair. 

 Length 32-8-36-5 mm. 



Macrolinus sikkimensis (Stoliczka). 



Basilianus sikkimensis, Stoliczka. 1873c. pp. 161-162. 

 Macrolinus sikkimensis, Gravely, 1914c, pp. 243-244, pi. xiii. figs. 42-42«. 

 Nine specimens from the Darjiling District (Tukvar, also specimens recently collected 

 by myself at Pashok, ca. 2,000 ft.), Assam (Margharita) andtheNaga Hills, 2,000-5,000 ft. 



Fig. IX. 

 Macrolinus spp. ; specific characters in the upper surface of the head >: 4. 

 1. M. obesus, Gravely. 2. M. depressus, Gravely. 



M. Vitalis de Salvaza has submitted for examination a specimen from Xieng Khaoung, 

 Tonkin, belonging to the sub-species tavoyanus, Gravely. Length 27*3-32-0 mm. 



Macrolinus rotundifrons, Kaup. 



Macrolinus rotundifrons, Kaup, 1874, pp. 44-45. 



Macrolinus rotundifrons, Gravely, 1914c, pp. 244-245, pi. xiii, fig. 43. 



Four specimens from Ceylon, one being from Belihul-Oya. Length 27*0-28-5 mm. 



Macrolinus obesus, n. sp. 



Fig. IX, 1. 



Four specimens from Ceylon, three being from Belihul-Oya. Length 29-4-33-4 mm. 



The antennal lamellae are very short and stout, even more so than in M . rotundifrons. 

 the first three being scarcely twice as long as thick, and scarcely more than half as long as 

 the last three. The ridges and tubercles of the head resemble those of M. rotundifrons. 

 but the general surface is less extensively punctured and rugose. 



