1921.] p. H. Gravely : Indian Spiders. 435 



Female. Chelicerae very long and widely divergent in both 

 sexes. First tooth of ventral row much the largest, two or three 

 times as large as first tooth of dorsal row, which is not situated so 

 close to the base of the fang; a semicircular depression between 

 them. The second tooth of both rows very small, followed at 

 rather long intervals by about five others of increasing size to 

 near the base from where the remaining seven decrease in size and 

 are more crowded. Fang unarmed. 



Male. Subapical spine long and slender. First tooth of dorsal 

 row slightly shorter and stouter than subapical spine ; the second 

 much smaller, the third smaller than the fourth ; the first five 

 widely spaced, the last six close together at the base. Ventral 

 row of about eight spines shorter than dorsal, the third and 

 the last two much smaller than rest. Fang with strong truncate 

 tubercle on inner side of bend just above base. 



The above diagnoses were drawn up in the first instance from 

 published descriptions for my own convenience in dealing with the 

 material before me. They have when possible and desirable been 

 modified in the light of this material and have been placed on 

 record here as a guide to others working on the group. 



The species which I have myself been able to examine may- 

 be distinguished as follows : — 



. Ocular quadrangle very much narrower in 

 j front than behind (fig. I a) ... ... T. gracilis, p. ^S^. 



' , Ocular quadrangle little or no narrower in 

 I front than behind ... ... .. 2. 



(Lateral ej'es somewhat more widely .separated 

 than medians (fig i^^,^ 1 ... ... T,- 



^i Lateral eyes not more widely separated than 

 j medians, usually more or less closely ap- 

 l proximate or contiguous ( fig. id) ... 4- 



, .\bdonien much les.s slender than is usual in 

 I the genus, only about four times as long as 

 ! broad, with more or less rounded sides : 

 31 anterior and posterior rows of eyes slightly 



recurved, anterior laterals minute (fig- ig) T. inackenxiei. p. J.^8. 

 j Abdomen slender, parallel-sided ; anterior 

 I and posterior rows of eyes strongly recurved. 



I, anterior laterals small . . T. nioiilnieinensis, p. 4T,g. 



f Females ... ... ,S- 



\ Males ... . . ... ... II. 



/ Fang with a more or less distinct tooth situat- 

 _ ) ed ventrallv on outer side of basal bend 

 3\ (figs. ja. b'nndd) ... ... ... 6. 



^ F'ang without any tooth in this position ... S. 



fFang unarmed e.\cept for above-mentioned 

 tooth : first two teeth of ventral row situat- 

 ed at base of fang and not markedly larger 

 f.) than others (fig. 3a) ... ... T. flefcheri, p. 440. 



' Fang armed on inner side with a strong tooth 

 about a third of the way from base to tip 

 (fig. T,b) or first ventral tooth (or teeth) very 

 large (figs. ,?c-rf) .. ... ... 7. 



' 7". iyyidescens. StoliczUa, belongs to this group it it is a true Tetraguatha, 

 but its full characters have not been determined (see above, p. 42S). 



