454 MR. n. R. HOGG ON AUSTRALASIAN SPIDERS. [DeC. 2, 



ISOPEBA FLAVIBARBIS L. Koch. 



Described from a non-adult female from Sydney ; not recorded 

 since. 



Genus Zachria L. Koch. 



Zachria L. Koch, Die Arach. Austr. vol. ii. p. 649. 

 Zachria Simon, Hist. Nat. des Ar. vol. ii. p. 45. 

 Type, Z . flavicoma L. Koch. 



As M. Simon remarks, this genus differs from Isopeda L. Koch 

 in the somewhat longer cephalothorax. 



The two distinguishable species may be diagnosed as follows : — 



Abdomen brownish yellow all over, no stripe flamcoma L. Koch. 



Abdomen brownish yellow, a darker brown stripe, widest 

 anteriorly and narrowing to rear, the whole length of 

 back from front to spinnerets ohlonga L. Koch. 



Zachria flavicoma L. Koch. 



Zachria flavicoma L. Koch, Arach. Austr. vol. ii. p. 650. 

 Log. King George's Sound. Female only described. No record 

 since. 



Zachria oblong a L. Koch. 



Zachria ohlonga L. Koch, I. c. p. 651. 



In the British Museum (Keyserling Collection) is a specimen 

 labelled Zachria ohlonga L. Koch, from Sydney, a female, which 

 agrees with Koch's description and is no doubt correctly named. 



The eyes are in every respect those of an Isopeda, the cephalo- 

 thorax flat above, rather steep at the sides and rear. The epigyne 

 agreed with Koch's drawing, but the specimen was half-moulted, 

 and on removing the skin the new one underneath is of true 

 Isopeda form. The mandibles are much kneed at base; three 

 teeth on outer and two on inner falx-sheath. 



The measurements in millimetres are as follows : — 



Long. Broad. 



P, T 1 ,1 Q ( 5 in front. 



Cephalothorax ... y -^ « 



Abdomen 14 8 



Mandibles 4 = front patella. 



Pat. & Metat. 

 Coxae. Tr. & fem. tib. & tars. 



Legs 1. 3 9 101 9 = 311 



2. 3 10 12^ 10 = 35 



3. 3 7 9 7 = 26 



4. 3 8 9 8 = 28 

 Palpi \\ 3i 31 3| = 12 



Koch desci'ibed a Zachria hcemorrhoidalis from Sydney from a 

 quite small, not adult female. Judging from his description it 

 appears to be a young specimen of Z. ohlonga. 



